Double bumper



Aug.

E. A. BANSCHBACH DOUBLE BUMPER Filed Dec. 12

192) 3 Sheets-Sheet 1 Aug. 19. 1924 E. A. BANSCHBACH DOUBLE BUMPER Filed Dec. 12 1921 3 Sheets-Sheet 5 n 7 u a Patented Aug. 19, 1924,

BEST AVAILABLE COPY curiae STATES EDWARD A. BANSCHBACH, OF CHICAGO, ILLINOIS.

DOUBLE BUMPER.

Application filed December 12, 1921. Serial No. 6"1,684.

To all'wlwmit may concern:

Be it known that I, Eowano A. BarracunAcH, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Double Bumpers, of which the following is a s 'ecification. This invention relates to a veiicle buffer 01 bumper particularly designed and intended for use with automobiles, and one of the principal objects of the invention is to providea device of this class which has a compound action, including with a lard or fender a number of resilient or resistent-de- F vices which are accumulative in their action, opposing an impact with the least shock to the vehicle itself. Other objects of the invention are to rovide improved mounting means for the bumper, and improved connectinv devices for the parts thereof.

' In the accompanying drawings, Fi l is a plan view, and Fi 2 is a section ta en on the line 2-2 of Big. 1, of a bumper constructed in accordance with the principles of this invention; Fig. 3 is a erspective of one of the double U clamps; Big. a is a side elevation of a frame clamp for a bumper of this class; Fi 5 is a section taken on the line 7--7' of h ig. 4; Fig. 6 is a section taken on the line 8'8 of Fig.'5; Fig. 7 is'a side elevation of a different form of double bumper clamp; Fig. 8 is a section taken on'the line lO-l0 of Fi 7; Fig. 9 is. detail section taken on thedins 11--11 of Fig. 7; Fig. 10 is a side elevation of another form of double bumper clump; Fig. 11 is a section taken on the line 13-43 of Fig. 10; Fig. 12 is a plan section taken on the line 14l4 of Fig. 10; Fig. 13 is a side elevation of another form 49 of double bumper clamp; lig. 14 is a section taken on the line l9--l9 of Fig. 13; l-ig. 15 is a ironl view of a butler plate;and Fig. lti a section-Lillian on the line 21-24 of Fig. 15.

In order to have the greatest eiliciency lll :1 bumper itis desirable that such a device shall be able to withstand slight shocks or impacts. and that a reserve or emergency is available for much more severe impacts. Tn the present invention this i-accomplishcd by providin r a pair of bum or bars one behind the ot or. each backer up by a resilient device, and each supported upon long arms from the vehicle and running gear frames respectively. The vehicle frame directly supports the body of the vehicle, and the running gear frame is that which directly supports the wheels.

Referring more particularly to the drawings, a pair of vehicle side frames 2 are shown connected at the ends to leaf springs 3 mounted in the ordinary way on an axle support 4 by U-bolts 5.

Attached to eachside frame b bolts 6 is a pair of plates 7, eac has an upward ro ecti0n 8 in which the cross bolts 9 an 10 are mounted. These cross bolts 9 and 10 form the upper ivoting supports for the forwardly exten in U- shaped members 11 and 12, one of eaci at each side of the frame and the lower arms of these U-shaped members are connected by links 13 and 14 to brackets 15 attached to the axle support 4. The brackets may be secured to the support 4 by the same fastenin nuts which hold the Uv-bolts 5 in place, an the link 13 of the outermost U-member 11 is preferably longer than the link 14 so that the member 11 will have a freer and further movement than the member 12.

Attached to the front members 11 is a bumper comprising separate side pieces 16, one attached to each U-shaped member 11 and each formed with a hooked inner end 17, the two hooked ends being connected by a closed link 18. Also extending across the junction of these two side pieces 16 is a front piece 19 loosely mounted in clips 20 one attached to each of the side pieces 16.

-A single burn or member 21 is supported by the inner 'U-s aped members 12:which has an intermediate loop 22 reenforced by a partially closed oblong link 23 held in place river the loop by fastening clips 24. If desired, this bumper member 21 may he made in two parts separated at the center and joined the same. way by the lin 23.

Both of these bumpers are so :urcd to their respective supporting members by what may be :allcd a double U-clamp which consists of a single piece preferably o 1' bar stock bent to form U-portions 26 connected y a cross piece 27 and the extremities being threaded lo receive fastening nuts 2n. By providing a crossbar 29 this U-elamp may be used to connect a number of mmnbers disposed at an angle to each other or in connection with a plate 30, as indicated in Fig. 3, a number of fastening of which parallel members may be secured together.

The advantage of this clamp is that it will H ll connect flat members of this kind either at an angle or parallellto each other without reducing the strength of any of the parts, and in fact strengthening or reenforcing tremitics inwardly binding the crossed memhers together so that the threaded extremities of the clamp are on the same side of the supporting member as the cross piece 27. A cross bar C9 is then placed over the threaded extremities and the fastening nuts 28 are tightened in place.

To further coordinate the double bumper action, springs 31 are inserted between the bumpers referably bearing against the hooked end 17 of the outer bumper members and supported b' them, and also engaging kit;

the outer face 0 the inner bumper member 21. At the rear of the link 23 of the inner bumper member a buffer device 32- preferably of the air cushion type is secured which bears against a cross plate 33 transversely pivoted at the ends of the side frames 7.. allowing it to swing up' and down to conform to a similar movement. of the bumpers.

It will be apparent that an impact with the outer bumper will cause its movement on the supports 1-1 opposed by the springs 31. If the impact is a severe one the inner bumper will be correspondingly deflected and its movement will be retarded or cushioned by the air buffer device 32. Both bumpers have a tree yielding movement due to the supporting links 2- and 14, and they are held in place by the upper supporting arms and the lower arm connections. It will llt ohsi'rvvd that both of these bumpers have a central divi ion lincso that either of the numliors l6 is separately movable on its sup porting member ll without materially deflecting throtlaor ne. and the member 21 mayhe dellrclcd from the entrul loop 22 wii iont materially alli'cting the other side. The inlr-rm i'lialo devices ill and 3-2 may he omitted if desired as the bumpers will be supported without 'tlnm. The engagement of tie Ullil'l' bumper will not ull'cct the inner one insurh :1 case until the outer one isde floored suili icully so that its parts. as for example the hooked extremities l7. engage the inner bumper whereupon the rr istuut llltll of the inner bumps-r will heuddcd to the onlor one.

in attaching a double bumper to the frame of a vehicle, a number of clamping devices BEST AVAILABLE COPY 52 of L-shaped bolts 53 are separately in-' serted from the opposite sides. ese threaded extremities are inserted an amount depending u on the width of a frame 5 4 to which the 0 amp is applied. The ends of the plate are'bent upwardly to formhingeloops or eyes 55 and 56 form porting members 12 and 11, and the shaniis of the bolts 53 are turned downwardly below the frame 54 closely adjacent the sides thereof. Connecting the extremities of opposite bolts .53 is a cross plate or, bar 57 in which are elongated slots 58 through which the bolts extend. Below the plate a number of fastening and lock nuts 59 are attached for holding the bolts in place and pressing the bar 57 tightly against the underside of the frame 54.

A. somewhat similar construction is shown in Figs. 7,8 and 9, in which pairs of end bolts 53 are threaded into opposite ends of a sleeve block 60 while an intermediate pair of bolts 53 is threaded directly intothe upturned sides-61 of a top plate 62, the extremities 63 of the top late being turned upwardly beyond the sides 61 to form a means for retaining the sleeve blocks 60 in connection with the platetiil, the bumper members 11 and 12 being pivoted upon cross bolts 64 mounted in the upturned sides 61.

A simple form of clamp is shownin Figs. 10. 11 and 12 comprising a plate with upturned hinge ends 71 and 72 for supporting bumper members 11 and 12 and havin a plurality of perforations 73 in-the in :e o the plate. Bolts 74 each formed with an L-shaped extension 75 the extremity of which is an upturned end 76. are ada ted to project downwardly at the sides of t frame with the extremities 76 seated in the perforation 73 of the plate and the heads of the bolts extend through corrcspondin perforations 77 in a plate 78 at the undersi e of the frame so that the bolt can be attached to frames of different widths, the same lates 70 and 78 being adaptedio accommo ate a number of different Widths In the construction shown by Figs. 18 and 19 there is a top late and a bottom plate 91 above and below the frame 54. Through these lates at the sides of the frame long and 3 art bolts 92 and 93 are inserted. the upper ends of which are provided with a headed eye 94 through which cross bolts are inserted for pivotally mounting the ends of bumper members 11 and 12. Be- Twoon the headed eyes and the plate, the long bolts 92. are inserted through sleeves 913 which hold their upper ends above the plate 90 andthe lower ends of the bolts are .provided with fastening and lock nuts 59.

One type of buffer'plate 111 is shown in Figs. and'16, which is preferably formed with a central depression or recess 112 which may be corrugated or roughened in an distinctive manner. The edge is preferab y left smooth to receive a thin strip 113 of metal, such as brass, aluminum, or the like, or any material which will take or retain a. bright finish orpolish, the object being to provide a metal strip or the like which is distinctive in appearance from the remainder or central portion of the plate.

I claim:

1. The combination with a vehicle frame and a running gear frame, of a pair of bumpers eachsupported separately from the two frames and one being within the other projecting from the ends of the frames.

2. In a vehiclebumper, the combination with the vehicle and runnin gear frames, of a resilient member pivote at one end to the vehicle frame extending forwardly in advance thereof and bent downwardly below the running our frame, a loose connection between the lower end of this member and the running gear frame, and a bumper bar at the front of the member.

3. The combination with a vehicle having a main frame and a relatively movable running gear frame, of a bumper bar in advance of the frames, and means for an porting the bar comprising a pair of U-siiaped members each connected at the u per end to the vehicle frame and having a oose connection at the lower end with the running gear frame.

4.. The combination with a vehicle frame and a running gear frame therefor, of a air of bumpers supported one in advance 0 the other at the front of the frames and each having a separate pivotal connection with the vehicle frame and a swinging connection with the running gear frame, whereby the action of the bumpers is. cumulative when the first one is depressed a predetermined amount.

5. The combination with a pair of vehicle shhframes, of a bumpebhaving pivotally supported arms, means for a taching the extremities of the arms to each of the side I'm-Imus. said means comprising a pair of plates engaging opposite sides of each side flu-mic. with a projection above the frame,

' nlnl cross bolts attaching the plates together ahme and below the side frame with a crow lmlt extending between the projections of the said plates and forming the pivot for the aid arm.

6. The combination with a running gear BEST AVAILABLE COPY frame and a spring sup d vehicle frame above it, of a pair 0 umpers each separately and independently connected to the vehicle frame and to the running gear from and capable of separate movement, and resilient means interposed between the separate bumpers.

7. The combination with vehicle and run-. ning gear frames, of a cross iece at the front of the frames, a pair 0 separately movable bumpers mounted one in advance of the other in front of the frames, and pressur resistin devices interposed between the bumpers an between the inner bumper and the said cross-piece.

8. In a bumper of the class described, the combination with a bumper member and a sugportin member at an angle thereto, and a ouble -clamp for attachm the bumper. and si ipporting members to er.

9. e combination in a bumper, of a pair of members at an angle to each other, and a one piece clamp fitting over one member and around the opposite side of the other one and extending around it to the opposite side of the first member, and a cross nected between the extremities at t 0 side of the first named member.

10. In a bumper, the combination of a pair of members arranged at an angle to each other, and a clamp for fasteni them together. the clamp comprising don le U- ieoe con- -haped portions with arms connected by a cross piece and a separate bar connecting the free ends of the other arms. 1

11. A bumper comprising a pair of vertically disposed U-sha supporting members, a bumper mem r separately secured to each U-shaped member, and means connecting the buffer. members permitting a separately yielding movement of each bumpi er member.

12. The combination with a vehicle frame, of a pair of bumpers di one within the other in front of the e, and means for separately supporting each bumperfrom the frame, said means com prising a clamp on the frame, a separatesupporting arm. for each bumper, and a pair of pivot supports carried by the clam engaging :25 pivot-ix igl the extremities of t e arms.

13. e combination with a double bumper of a clamp therefor comprising a plurallty of pairs of bolts spaced apart and adapted to be disposed at opposite sides of a su porting frame, means connecting the be ts oieatcl} pair toggther pn one side of a supper mg rame, an :1 ate en aged b the bolts at the opposite aide of a fram the plate having means for connecting the ends of the double bumper thereto.

EDWARD A. BANSCHBACH. 

